tofsee | 705eafbde7f8167554b1d394de00d91d5510106c42dfb00c9cc39685c002a3cf

General

Target

2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe
Size

10.4MB
MD5

15690cfc6f103df9ee6ec8ce20fdebc3
SHA1

6e665418d284d8b938d051bafa7e21b3ba86c80f
SHA256

705eafbde7f8167554b1d394de00d91d5510106c42dfb00c9cc39685c002a3cf
SHA512

20b5effaeddf8efdf41e3b0e7d9ccbbb166bb71757e66b2b9f7b99c6d6d0e3e72f2166fd191a9ed20e2dbc6b8bfd744fe2c727c42210ebd9bd0b773a9b81aec7
SSDEEP

24576:IEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZd:Ffot

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee
Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4748	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\oeykgrvf\ImagePath = "C:\\Windows\\SysWOW64\\oeykgrvf\\yplsjimq.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe

Deletes itself 1 IoCs

pid	Process
5068	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
8	yplsjimq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 8 set thread context of 5068	8	yplsjimq.exe	101

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
376	sc.exe
1488	sc.exe
3772	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1624	3960	WerFault.exe	82
2372	8	WerFault.exe	94

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	yplsjimq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3960 wrote to memory of 3800	3960	2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe	84
PID 3960 wrote to memory of 3800	3960	2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe	84
PID 3960 wrote to memory of 3800	3960	2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe	84
PID 3960 wrote to memory of 3708	3960	2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe	86
PID 3960 wrote to memory of 3708	3960	2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe	86
PID 3960 wrote to memory of 3708	3960	2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe	86
PID 3960 wrote to memory of 376	3960	2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe	88
PID 3960 wrote to memory of 376	3960	2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe	88
PID 3960 wrote to memory of 376	3960	2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe	88
PID 3960 wrote to memory of 1488	3960	2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe	90
PID 3960 wrote to memory of 1488	3960	2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe	90
PID 3960 wrote to memory of 1488	3960	2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe	90
PID 3960 wrote to memory of 3772	3960	2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe	92
PID 3960 wrote to memory of 3772	3960	2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe	92
PID 3960 wrote to memory of 3772	3960	2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe	92
PID 3960 wrote to memory of 4748	3960	2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe	95
PID 3960 wrote to memory of 4748	3960	2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe	95
PID 3960 wrote to memory of 4748	3960	2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe	95
PID 8 wrote to memory of 5068	8	yplsjimq.exe	101
PID 8 wrote to memory of 5068	8	yplsjimq.exe	101
PID 8 wrote to memory of 5068	8	yplsjimq.exe	101
PID 8 wrote to memory of 5068	8	yplsjimq.exe	101
PID 8 wrote to memory of 5068	8	yplsjimq.exe	101

C:\Users\Admin\AppData\Local\Temp\2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3960
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\oeykgrvf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3800
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yplsjimq.exe" C:\Windows\SysWOW64\oeykgrvf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3708
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create oeykgrvf binPath= "C:\Windows\SysWOW64\oeykgrvf\yplsjimq.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:376
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description oeykgrvf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1488
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start oeykgrvf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3772
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:4748
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3960 -s 1248
  2⤵
  - Program crash
  PID:1624

C:\Windows\SysWOW64\oeykgrvf\yplsjimq.exe
C:\Windows\SysWOW64\oeykgrvf\yplsjimq.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-26_15690cfc6f103df9ee6ec8ce20fdebc3_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:8
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:5068
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 8 -s 560
  2⤵
  - Program crash
  PID:2372

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3960 -ip 3960
1⤵
PID:1568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 8 -ip 8
1⤵
PID:1536

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\yplsjimq.exe

Filesize
12.8MB

MD5
b8cbe229db5f5116bb60fa4475e58ea8

SHA1
3fcce4344791f791ba62199ad71297387936f038

SHA256
2923852431766d3da326baf4bffac6a92a0092e87be7f0f451e4633cb755626b

SHA512
6fc0df22623afd501ca73b07790a2bb8f92e700294ba9a9aa6e119a9597596d2a7d10dc28fe650eedc718f118810fd15c349068fe78d95847dfa014b1120ec82

Download Submit
memory/8-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/8-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/8-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/8-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3960-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3960-2-0x0000000000590000-0x00000000005A3000-memory.dmp

Filesize
76KB

Download
memory/3960-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3960-8-0x0000000000590000-0x00000000005A3000-memory.dmp

Filesize
76KB

Download
memory/3960-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3960-1-0x00000000005D0000-0x00000000006D0000-memory.dmp

Filesize
1024KB

Download
memory/5068-14-0x00000000012C0000-0x00000000012D5000-memory.dmp

Filesize
84KB

Download
memory/5068-16-0x00000000012C0000-0x00000000012D5000-memory.dmp

Filesize
84KB

Download
memory/5068-17-0x00000000012C0000-0x00000000012D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads